Just got a Razer Imperator gaming mouse and thought I would share some settings which worked well for me.
I booted windows and installed the Razer configuration utility to set the DPI to 5600 DPI and polling rate to 1000Hz for games (I don't use the top buttons to switch DPI profiles as I use those for gaming macros).

Thanks tomk.
Sorry popsUlfr I do not have the keyboard yet but might well get it at some point as I'm running out of macro buttons _________________64bit Gentoo on dual Xeon X5650 (24 ht cores), 18GB DDR3 Ram, nVidia Quadro 2000, 128GB Crucial SSD

It came in handy when I had to add
Option "AutoAddDevices" "OFF"
to my xorg for my keyboard to work flawlessly.

Somehow the combination of both configs is not working perfectly as I lost the back/forward functionality of the mouse's buttons in browsers.
Do these still work for you or did you find another trick to make them work?